I watch Free! with my girlfriend every week and I'd say it has its gay moments but is aimed at heterosexual girls more than gay guys. (I do have a gay friend that's in love with Haru-chan)
As far as things I'm ashamed of, I used to be ashamed I watched School Days as well, mainly because I watched it on a whim and had no idea what it was about (BIG EFFING SURPRISE). Many years later and I'd say that I'm no longer ashamed of it or anything else for that matter.
Ok maybe a little shame for being a straight guy that liked reading Vampire Knight.